Fix display

pico.js

@@ -334,7 +334,7 @@ const Media = {
                 ),
                 m('label',
                     m('input#mute-check', {onchange: setSelectedMedia, type: 'checkbox'}),
-                    m('mute'),
+                    m('span', 'mute'),
                 ),
             ),
             m('.videos', {className: VideoOptions.anyFullScreen()},